Note 10. Policy Benefits and Claims: Short-duration Insurance Contracts, Schedule of Historical Claims Duration (Details)	Dec. 31, 2016
Specialty Health Segment Member
Short-duration Insurance Contracts, Historical Claims Duration, Year One	68.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	24.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	1.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	0.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	0.10%
Group disability, life and DBL Segment Member | Group Disability Product Line
Short-duration Insurance Contracts, Historical Claims Duration, Year One	20.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	23.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	7.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	4.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	2.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	3.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	3.40%